<script>
import {nanoid} from "nanoid";

export default {
  name: 'MyHeader',
  data() {
    return {
      title: ''  //定义事件标题
    }
  },
  methods: {
    add() {
      if (!this.title.trim()) return
      const ObjTodo = {
        id: nanoid(),
        title: this.title,
        done: false
      }
      //通过自定义属性将ObjTodo给父组件
      this.$emit('addTodo', ObjTodo)
      this.title = ''
    }
  }
}
</script>

<template>
  <div>
    <input type="text" placeholder="输入你的任务,按回车确认" v-model="title" @keydown.enter="add">
  </div>
</template>

<style scoped>

input {
  display: block;
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
  margin: 10px auto;

}

input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}


</style>